libs/hwui/hwui/Bitmap.cpp - platform/frameworks/base - Git at Google

 /*
  * Copyright (C) 2015 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 #include "Bitmap.h"

 #include "Caches.h"
 #include "renderthread/EglManager.h"
 #include "renderthread/RenderThread.h"
 #include "renderthread/RenderProxy.h"
 #include "utils/Color.h"

 #include <sys/mman.h>

 #include <log/log.h>
 #include <cutils/ashmem.h>

 #include <private/gui/ComposerService.h>
 #include <binder/IServiceManager.h>
 #include <ui/PixelFormat.h>

 #include <SkCanvas.h>
 #include <SkImagePriv.h>

 namespace android {

 static bool computeAllocationSize(size_t rowBytes, int height, size_t* size) {
     int32_t rowBytes32 = SkToS32(rowBytes);
     int64_t bigSize = (int64_t) height * rowBytes32;
     if (rowBytes32 < 0 || !sk_64_isS32(bigSize)) {
         return false; // allocation will be too large
     }

     *size = sk_64_asS32(bigSize);
     return true;
 }

 typedef sk_sp<Bitmap> (*AllocPixeRef)(size_t allocSize, const SkImageInfo& info, size_t rowBytes,
         sk_sp<SkColorTable> ctable);

 static sk_sp<Bitmap> allocateBitmap(SkBitmap* bitmap, sk_sp<SkColorTable> ctable, AllocPixeRef alloc) {
     const SkImageInfo& info = bitmap->info();
     if (info.colorType() == kUnknown_SkColorType) {
         LOG_ALWAYS_FATAL("unknown bitmap configuration");
         return nullptr;
     }

     size_t size;

     // we must respect the rowBytes value already set on the bitmap instead of
     // attempting to compute our own.
     const size_t rowBytes = bitmap->rowBytes();
     if (!computeAllocationSize(rowBytes, bitmap->height(), &size)) {
         return nullptr;
     }

     auto wrapper = alloc(size, info, rowBytes, std::move(ctable));
     if (wrapper) {
         wrapper->getSkBitmap(bitmap);
     }
     return wrapper;
 }

 sk_sp<Bitmap> Bitmap::allocateAshmemBitmap(SkBitmap* bitmap, sk_sp<SkColorTable> ctable) {
    return allocateBitmap(bitmap, std::move(ctable), &Bitmap::allocateAshmemBitmap);
 }

 static sk_sp<Bitmap> allocateHeapBitmap(size_t size, const SkImageInfo& info, size_t rowBytes,
         sk_sp<SkColorTable> ctable) {
     void* addr = calloc(size, 1);
     if (!addr) {
         return nullptr;
     }
     return sk_sp<Bitmap>(new Bitmap(addr, size, info, rowBytes, std::move(ctable)));
 }

 sk_sp<Bitmap> Bitmap::allocateHardwareBitmap(SkBitmap& bitmap) {
     return uirenderer::renderthread::RenderProxy::allocateHardwareBitmap(bitmap);
 }

 sk_sp<Bitmap> Bitmap::allocateHeapBitmap(SkBitmap* bitmap, sk_sp<SkColorTable> ctable) {
    return allocateBitmap(bitmap, std::move(ctable), &android::allocateHeapBitmap);
 }

 sk_sp<Bitmap> Bitmap::allocateHeapBitmap(const SkImageInfo& info) {
     size_t size;
     if (!computeAllocationSize(info.minRowBytes(), info.height(), &size)) {
         LOG_ALWAYS_FATAL("trying to allocate too large bitmap");
         return nullptr;
     }
     return android::allocateHeapBitmap(size, info, info.minRowBytes(), nullptr);
 }

 sk_sp<Bitmap> Bitmap::allocateAshmemBitmap(size_t size, const SkImageInfo& info,
         size_t rowBytes, sk_sp<SkColorTable> ctable) {
     // Create new ashmem region with read/write priv
     int fd = ashmem_create_region("bitmap", size);
     if (fd < 0) {
         return nullptr;
     }

     void* addr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
     if (addr == MAP_FAILED) {
         close(fd);
         return nullptr;
     }

     if (ashmem_set_prot_region(fd, PROT_READ) < 0) {
         munmap(addr, size);
         close(fd);
         return nullptr;
     }
     return sk_sp<Bitmap>(new Bitmap(addr, fd, size, info, rowBytes, std::move(ctable)));
 }

 void FreePixelRef(void* addr, void* context) {
     auto pixelRef = (SkPixelRef*) context;
     pixelRef->unref();
 }

 sk_sp<Bitmap> Bitmap::createFrom(const SkImageInfo& info, SkPixelRef& pixelRef) {
     pixelRef.ref();
     return sk_sp<Bitmap>(new Bitmap((void*) pixelRef.pixels(), (void*) &pixelRef, FreePixelRef,
             info, pixelRef.rowBytes(), sk_ref_sp(pixelRef.colorTable())));
 }

 sk_sp<Bitmap> Bitmap::createFrom(sp<GraphicBuffer> graphicBuffer) {
     PixelFormat format = graphicBuffer->getPixelFormat();
     if (!graphicBuffer.get() ||
             (format != PIXEL_FORMAT_RGBA_8888 && format != PIXEL_FORMAT_RGBA_FP16)) {
         return nullptr;
     }
     SkImageInfo info = SkImageInfo::Make(graphicBuffer->getWidth(), graphicBuffer->getHeight(),
             kRGBA_8888_SkColorType, kPremul_SkAlphaType,
             SkColorSpace::MakeSRGB());
     return sk_sp<Bitmap>(new Bitmap(graphicBuffer.get(), info));
 }

 void Bitmap::setColorSpace(sk_sp<SkColorSpace> colorSpace) {
     mInfo = mInfo.makeColorSpace(std::move(colorSpace));
 }

 static SkImageInfo validateAlpha(const SkImageInfo& info) {
     // Need to validate the alpha type to filter against the color type
     // to prevent things like a non-opaque RGB565 bitmap
     SkAlphaType alphaType;
     LOG_ALWAYS_FATAL_IF(!SkColorTypeValidateAlphaType(
             info.colorType(), info.alphaType(), &alphaType),
             "Failed to validate alpha type!");
     return info.makeAlphaType(alphaType);
 }

 void Bitmap::reconfigure(const SkImageInfo& newInfo, size_t rowBytes, sk_sp<SkColorTable> ctable) {
     if (kIndex_8_SkColorType != newInfo.colorType()) {
         ctable = nullptr;
     }

     mInfo = validateAlpha(newInfo);

     // Dirty hack is dirty
     // TODO: Figure something out here, Skia's current design makes this
     // really hard to work with. Skia really, really wants immutable objects,
     // but with the nested-ref-count hackery going on that's just not
     // feasible without going insane trying to figure it out
     this->android_only_reset(mInfo.width(), mInfo.height(), rowBytes, std::move(ctable));
 }

 static sk_sp<SkColorTable> sanitize(const SkImageInfo& info, sk_sp<SkColorTable> ctable) {
     if (info.colorType() == kIndex_8_SkColorType) {
         SkASSERT(ctable);
         return ctable;
     }
     return nullptr; // drop the ctable if we're not indexed
 }
 Bitmap::Bitmap(void* address, size_t size, const SkImageInfo& info, size_t rowBytes,
         sk_sp<SkColorTable> ctable)
             : SkPixelRef(info.width(), info.height(), address, rowBytes,
                     sanitize(info, std::move(ctable)))
             , mInfo(validateAlpha(info))
             , mPixelStorageType(PixelStorageType::Heap) {
     mPixelStorage.heap.address = address;
     mPixelStorage.heap.size = size;
 }

 Bitmap::Bitmap(void* address, void* context, FreeFunc freeFunc,
                 const SkImageInfo& info, size_t rowBytes, sk_sp<SkColorTable> ctable)
             : SkPixelRef(info.width(), info.height(), address, rowBytes,
                     sanitize(info, std::move(ctable)))
             , mInfo(validateAlpha(info))
             , mPixelStorageType(PixelStorageType::External) {
     mPixelStorage.external.address = address;
     mPixelStorage.external.context = context;
     mPixelStorage.external.freeFunc = freeFunc;
 }

 Bitmap::Bitmap(void* address, int fd, size_t mappedSize,
                 const SkImageInfo& info, size_t rowBytes, sk_sp<SkColorTable> ctable)
             : SkPixelRef(info.width(), info.height(), address, rowBytes,
                     sanitize(info, std::move(ctable)))
             , mInfo(validateAlpha(info))
             , mPixelStorageType(PixelStorageType::Ashmem) {
     mPixelStorage.ashmem.address = address;
     mPixelStorage.ashmem.fd = fd;
     mPixelStorage.ashmem.size = mappedSize;
 }

 Bitmap::Bitmap(GraphicBuffer* buffer, const SkImageInfo& info)
         : SkPixelRef(info.width(), info.height(), nullptr,
                      bytesPerPixel(buffer->getPixelFormat()) * buffer->getStride(),
                      nullptr)
         , mInfo(validateAlpha(info))
         , mPixelStorageType(PixelStorageType::Hardware) {
     mPixelStorage.hardware.buffer = buffer;
     buffer->incStrong(buffer);
     setImmutable(); // HW bitmaps are always immutable
     if (uirenderer::Properties::isSkiaEnabled()) {
         // TODO: add color correctness for Skia pipeline - pass null color space for now
         mImage = SkImage::MakeFromAHardwareBuffer(reinterpret_cast<AHardwareBuffer*>(buffer),
                 mInfo.alphaType(), nullptr);
     }
 }

 Bitmap::~Bitmap() {
     switch (mPixelStorageType) {
     case PixelStorageType::External:
         mPixelStorage.external.freeFunc(mPixelStorage.external.address,
                 mPixelStorage.external.context);
         break;
     case PixelStorageType::Ashmem:
         munmap(mPixelStorage.ashmem.address, mPixelStorage.ashmem.size);
         close(mPixelStorage.ashmem.fd);
         break;
     case PixelStorageType::Heap:
         free(mPixelStorage.heap.address);
         break;
     case PixelStorageType::Hardware:
         auto buffer = mPixelStorage.hardware.buffer;
         buffer->decStrong(buffer);
         mPixelStorage.hardware.buffer = nullptr;
         break;

     }

     android::uirenderer::renderthread::RenderProxy::onBitmapDestroyed(getStableID());
 }

 bool Bitmap::hasHardwareMipMap() const {
     return mHasHardwareMipMap;
 }

 void Bitmap::setHasHardwareMipMap(bool hasMipMap) {
     mHasHardwareMipMap = hasMipMap;
 }

 void* Bitmap::getStorage() const {
     switch (mPixelStorageType) {
     case PixelStorageType::External:
         return mPixelStorage.external.address;
     case PixelStorageType::Ashmem:
         return mPixelStorage.ashmem.address;
     case PixelStorageType::Heap:
         return mPixelStorage.heap.address;
     case PixelStorageType::Hardware:
         return nullptr;
     }
 }

 int Bitmap::getAshmemFd() const {
     switch (mPixelStorageType) {
     case PixelStorageType::Ashmem:
         return mPixelStorage.ashmem.fd;
     default:
         return -1;
     }
 }

 size_t Bitmap::getAllocationByteCount() const {
     switch (mPixelStorageType) {
     case PixelStorageType::Heap:
         return mPixelStorage.heap.size;
     default:
         return rowBytes() * height();
     }
 }

 void Bitmap::reconfigure(const SkImageInfo& info) {
     reconfigure(info, info.minRowBytes(), nullptr);
 }

 void Bitmap::setAlphaType(SkAlphaType alphaType) {
     if (!SkColorTypeValidateAlphaType(info().colorType(), alphaType, &alphaType)) {
         return;
     }

     mInfo = mInfo.makeAlphaType(alphaType);
 }

 void Bitmap::getSkBitmap(SkBitmap* outBitmap) {
     outBitmap->setHasHardwareMipMap(mHasHardwareMipMap);
     if (isHardware()) {
         if (uirenderer::Properties::isSkiaEnabled()) {
             // TODO: add color correctness for Skia pipeline - pass null color space for now
             outBitmap->allocPixels(SkImageInfo::Make(info().width(), info().height(),
                     info().colorType(), info().alphaType(), nullptr));
         } else {
             outBitmap->allocPixels(info());
         }
         uirenderer::renderthread::RenderProxy::copyGraphicBufferInto(graphicBuffer(), outBitmap);
         return;
     }
     outBitmap->setInfo(mInfo, rowBytes());
     outBitmap->setPixelRef(sk_ref_sp(this), 0, 0);
 }

 void Bitmap::getBounds(SkRect* bounds) const {
     SkASSERT(bounds);
     bounds->set(0, 0, SkIntToScalar(width()), SkIntToScalar(height()));
 }

 GraphicBuffer* Bitmap::graphicBuffer() {
     if (isHardware()) {
         return mPixelStorage.hardware.buffer;
     }
     return nullptr;
 }

 sk_sp<SkImage> Bitmap::makeImage() {
     sk_sp<SkImage> image = mImage;
     if (!image) {
         SkASSERT(!(isHardware() && uirenderer::Properties::isSkiaEnabled()));
         SkBitmap skiaBitmap;
         skiaBitmap.setInfo(info(), rowBytes());
         skiaBitmap.setPixelRef(sk_ref_sp(this), 0, 0);
         skiaBitmap.setHasHardwareMipMap(mHasHardwareMipMap);
         // Note we don't cache in this case, because the raster image holds a pointer to this Bitmap
         // internally and ~Bitmap won't be invoked.
         // TODO: refactor Bitmap to not derive from SkPixelRef, which would allow caching here.
         image = SkMakeImageFromRasterBitmap(skiaBitmap, kNever_SkCopyPixelsMode);
     }
     return image;
 }

 } // namespace android
	/*
	* Copyright (C) 2015 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/
	#include "Bitmap.h"

	#include "Caches.h"
	#include "renderthread/EglManager.h"
	#include "renderthread/RenderThread.h"
	#include "renderthread/RenderProxy.h"
	#include "utils/Color.h"

	#include <sys/mman.h>

	#include <log/log.h>
	#include <cutils/ashmem.h>

	#include <private/gui/ComposerService.h>
	#include <binder/IServiceManager.h>
	#include <ui/PixelFormat.h>

	#include <SkCanvas.h>
	#include <SkImagePriv.h>

	namespace android {

	static bool computeAllocationSize(size_t rowBytes, int height, size_t* size) {
	int32_t rowBytes32 = SkToS32(rowBytes);
	int64_t bigSize = (int64_t) height * rowBytes32;
	if (rowBytes32 < 0 \|\| !sk_64_isS32(bigSize)) {
	return false; // allocation will be too large
	}

	*size = sk_64_asS32(bigSize);
	return true;
	}

	typedef sk_sp<Bitmap> (*AllocPixeRef)(size_t allocSize, const SkImageInfo& info, size_t rowBytes,
	sk_sp<SkColorTable> ctable);

	static sk_sp<Bitmap> allocateBitmap(SkBitmap* bitmap, sk_sp<SkColorTable> ctable, AllocPixeRef alloc) {
	const SkImageInfo& info = bitmap->info();
	if (info.colorType() == kUnknown_SkColorType) {
	LOG_ALWAYS_FATAL("unknown bitmap configuration");
	return nullptr;
	}

	size_t size;

	// we must respect the rowBytes value already set on the bitmap instead of
	// attempting to compute our own.
	const size_t rowBytes = bitmap->rowBytes();
	if (!computeAllocationSize(rowBytes, bitmap->height(), &size)) {
	return nullptr;
	}

	auto wrapper = alloc(size, info, rowBytes, std::move(ctable));
	if (wrapper) {
	wrapper->getSkBitmap(bitmap);
	}
	return wrapper;
	}

	sk_sp<Bitmap> Bitmap::allocateAshmemBitmap(SkBitmap* bitmap, sk_sp<SkColorTable> ctable) {
	return allocateBitmap(bitmap, std::move(ctable), &Bitmap::allocateAshmemBitmap);
	}

	static sk_sp<Bitmap> allocateHeapBitmap(size_t size, const SkImageInfo& info, size_t rowBytes,
	sk_sp<SkColorTable> ctable) {
	void* addr = calloc(size, 1);
	if (!addr) {
	return nullptr;
	}
	return sk_sp<Bitmap>(new Bitmap(addr, size, info, rowBytes, std::move(ctable)));
	}

	sk_sp<Bitmap> Bitmap::allocateHardwareBitmap(SkBitmap& bitmap) {
	return uirenderer::renderthread::RenderProxy::allocateHardwareBitmap(bitmap);
	}

	sk_sp<Bitmap> Bitmap::allocateHeapBitmap(SkBitmap* bitmap, sk_sp<SkColorTable> ctable) {
	return allocateBitmap(bitmap, std::move(ctable), &android::allocateHeapBitmap);
	}

	sk_sp<Bitmap> Bitmap::allocateHeapBitmap(const SkImageInfo& info) {
	size_t size;
	if (!computeAllocationSize(info.minRowBytes(), info.height(), &size)) {
	LOG_ALWAYS_FATAL("trying to allocate too large bitmap");
	return nullptr;
	}
	return android::allocateHeapBitmap(size, info, info.minRowBytes(), nullptr);
	}

	sk_sp<Bitmap> Bitmap::allocateAshmemBitmap(size_t size, const SkImageInfo& info,
	size_t rowBytes, sk_sp<SkColorTable> ctable) {
	// Create new ashmem region with read/write priv
	int fd = ashmem_create_region("bitmap", size);
	if (fd < 0) {
	return nullptr;
	}

	void* addr = mmap(NULL, size, PROT_READ \| PROT_WRITE, MAP_SHARED, fd, 0);
	if (addr == MAP_FAILED) {
	close(fd);
	return nullptr;
	}

	if (ashmem_set_prot_region(fd, PROT_READ) < 0) {
	munmap(addr, size);
	close(fd);
	return nullptr;
	}
	return sk_sp<Bitmap>(new Bitmap(addr, fd, size, info, rowBytes, std::move(ctable)));
	}

	void FreePixelRef(void* addr, void* context) {
	auto pixelRef = (SkPixelRef*) context;
	pixelRef->unref();
	}

	sk_sp<Bitmap> Bitmap::createFrom(const SkImageInfo& info, SkPixelRef& pixelRef) {
	pixelRef.ref();
	return sk_sp<Bitmap>(new Bitmap((void) pixelRef.pixels(), (void) &pixelRef, FreePixelRef,
	info, pixelRef.rowBytes(), sk_ref_sp(pixelRef.colorTable())));
	}

	sk_sp<Bitmap> Bitmap::createFrom(sp<GraphicBuffer> graphicBuffer) {
	PixelFormat format = graphicBuffer->getPixelFormat();
	if (!graphicBuffer.get() \|\|
	(format != PIXEL_FORMAT_RGBA_8888 && format != PIXEL_FORMAT_RGBA_FP16)) {
	return nullptr;
	}
	SkImageInfo info = SkImageInfo::Make(graphicBuffer->getWidth(), graphicBuffer->getHeight(),
	kRGBA_8888_SkColorType, kPremul_SkAlphaType,
	SkColorSpace::MakeSRGB());
	return sk_sp<Bitmap>(new Bitmap(graphicBuffer.get(), info));
	}

	void Bitmap::setColorSpace(sk_sp<SkColorSpace> colorSpace) {
	mInfo = mInfo.makeColorSpace(std::move(colorSpace));
	}

	static SkImageInfo validateAlpha(const SkImageInfo& info) {
	// Need to validate the alpha type to filter against the color type
	// to prevent things like a non-opaque RGB565 bitmap
	SkAlphaType alphaType;
	LOG_ALWAYS_FATAL_IF(!SkColorTypeValidateAlphaType(
	info.colorType(), info.alphaType(), &alphaType),
	"Failed to validate alpha type!");
	return info.makeAlphaType(alphaType);
	}

	void Bitmap::reconfigure(const SkImageInfo& newInfo, size_t rowBytes, sk_sp<SkColorTable> ctable) {
	if (kIndex_8_SkColorType != newInfo.colorType()) {
	ctable = nullptr;
	}

	mInfo = validateAlpha(newInfo);

	// Dirty hack is dirty
	// TODO: Figure something out here, Skia's current design makes this
	// really hard to work with. Skia really, really wants immutable objects,
	// but with the nested-ref-count hackery going on that's just not
	// feasible without going insane trying to figure it out
	this->android_only_reset(mInfo.width(), mInfo.height(), rowBytes, std::move(ctable));
	}

	static sk_sp<SkColorTable> sanitize(const SkImageInfo& info, sk_sp<SkColorTable> ctable) {
	if (info.colorType() == kIndex_8_SkColorType) {
	SkASSERT(ctable);
	return ctable;
	}
	return nullptr; // drop the ctable if we're not indexed
	}
	Bitmap::Bitmap(void* address, size_t size, const SkImageInfo& info, size_t rowBytes,
	sk_sp<SkColorTable> ctable)
	: SkPixelRef(info.width(), info.height(), address, rowBytes,
	sanitize(info, std::move(ctable)))
	, mInfo(validateAlpha(info))
	, mPixelStorageType(PixelStorageType::Heap) {
	mPixelStorage.heap.address = address;
	mPixelStorage.heap.size = size;
	}

	Bitmap::Bitmap(void* address, void* context, FreeFunc freeFunc,
	const SkImageInfo& info, size_t rowBytes, sk_sp<SkColorTable> ctable)
	: SkPixelRef(info.width(), info.height(), address, rowBytes,
	sanitize(info, std::move(ctable)))
	, mInfo(validateAlpha(info))
	, mPixelStorageType(PixelStorageType::External) {
	mPixelStorage.external.address = address;
	mPixelStorage.external.context = context;
	mPixelStorage.external.freeFunc = freeFunc;
	}

	Bitmap::Bitmap(void* address, int fd, size_t mappedSize,
	const SkImageInfo& info, size_t rowBytes, sk_sp<SkColorTable> ctable)
	: SkPixelRef(info.width(), info.height(), address, rowBytes,
	sanitize(info, std::move(ctable)))
	, mInfo(validateAlpha(info))
	, mPixelStorageType(PixelStorageType::Ashmem) {
	mPixelStorage.ashmem.address = address;
	mPixelStorage.ashmem.fd = fd;
	mPixelStorage.ashmem.size = mappedSize;
	}

	Bitmap::Bitmap(GraphicBuffer* buffer, const SkImageInfo& info)
	: SkPixelRef(info.width(), info.height(), nullptr,
	bytesPerPixel(buffer->getPixelFormat()) * buffer->getStride(),
	nullptr)
	, mInfo(validateAlpha(info))
	, mPixelStorageType(PixelStorageType::Hardware) {
	mPixelStorage.hardware.buffer = buffer;
	buffer->incStrong(buffer);
	setImmutable(); // HW bitmaps are always immutable
	if (uirenderer::Properties::isSkiaEnabled()) {
	// TODO: add color correctness for Skia pipeline - pass null color space for now
	mImage = SkImage::MakeFromAHardwareBuffer(reinterpret_cast<AHardwareBuffer*>(buffer),
	mInfo.alphaType(), nullptr);
	}
	}

	Bitmap::~Bitmap() {
	switch (mPixelStorageType) {
	case PixelStorageType::External:
	mPixelStorage.external.freeFunc(mPixelStorage.external.address,
	mPixelStorage.external.context);
	break;
	case PixelStorageType::Ashmem:
	munmap(mPixelStorage.ashmem.address, mPixelStorage.ashmem.size);
	close(mPixelStorage.ashmem.fd);
	break;
	case PixelStorageType::Heap:
	free(mPixelStorage.heap.address);
	break;
	case PixelStorageType::Hardware:
	auto buffer = mPixelStorage.hardware.buffer;
	buffer->decStrong(buffer);
	mPixelStorage.hardware.buffer = nullptr;
	break;

	}

	android::uirenderer::renderthread::RenderProxy::onBitmapDestroyed(getStableID());
	}

	bool Bitmap::hasHardwareMipMap() const {
	return mHasHardwareMipMap;
	}

	void Bitmap::setHasHardwareMipMap(bool hasMipMap) {
	mHasHardwareMipMap = hasMipMap;
	}

	void* Bitmap::getStorage() const {
	switch (mPixelStorageType) {
	case PixelStorageType::External:
	return mPixelStorage.external.address;
	case PixelStorageType::Ashmem:
	return mPixelStorage.ashmem.address;
	case PixelStorageType::Heap:
	return mPixelStorage.heap.address;
	case PixelStorageType::Hardware:
	return nullptr;
	}
	}

	int Bitmap::getAshmemFd() const {
	switch (mPixelStorageType) {
	case PixelStorageType::Ashmem:
	return mPixelStorage.ashmem.fd;
	default:
	return -1;
	}
	}

	size_t Bitmap::getAllocationByteCount() const {
	switch (mPixelStorageType) {
	case PixelStorageType::Heap:
	return mPixelStorage.heap.size;
	default:
	return rowBytes() * height();
	}
	}

	void Bitmap::reconfigure(const SkImageInfo& info) {
	reconfigure(info, info.minRowBytes(), nullptr);
	}

	void Bitmap::setAlphaType(SkAlphaType alphaType) {
	if (!SkColorTypeValidateAlphaType(info().colorType(), alphaType, &alphaType)) {
	return;
	}

	mInfo = mInfo.makeAlphaType(alphaType);
	}

	void Bitmap::getSkBitmap(SkBitmap* outBitmap) {
	outBitmap->setHasHardwareMipMap(mHasHardwareMipMap);
	if (isHardware()) {
	if (uirenderer::Properties::isSkiaEnabled()) {
	// TODO: add color correctness for Skia pipeline - pass null color space for now
	outBitmap->allocPixels(SkImageInfo::Make(info().width(), info().height(),
	info().colorType(), info().alphaType(), nullptr));
	} else {
	outBitmap->allocPixels(info());
	}
	uirenderer::renderthread::RenderProxy::copyGraphicBufferInto(graphicBuffer(), outBitmap);
	return;
	}
	outBitmap->setInfo(mInfo, rowBytes());
	outBitmap->setPixelRef(sk_ref_sp(this), 0, 0);
	}

	void Bitmap::getBounds(SkRect* bounds) const {
	SkASSERT(bounds);
	bounds->set(0, 0, SkIntToScalar(width()), SkIntToScalar(height()));
	}

	GraphicBuffer* Bitmap::graphicBuffer() {
	if (isHardware()) {
	return mPixelStorage.hardware.buffer;
	}
	return nullptr;
	}

	sk_sp<SkImage> Bitmap::makeImage() {
	sk_sp<SkImage> image = mImage;
	if (!image) {
	SkASSERT(!(isHardware() && uirenderer::Properties::isSkiaEnabled()));
	SkBitmap skiaBitmap;
	skiaBitmap.setInfo(info(), rowBytes());
	skiaBitmap.setPixelRef(sk_ref_sp(this), 0, 0);
	skiaBitmap.setHasHardwareMipMap(mHasHardwareMipMap);
	// Note we don't cache in this case, because the raster image holds a pointer to this Bitmap
	// internally and ~Bitmap won't be invoked.
	// TODO: refactor Bitmap to not derive from SkPixelRef, which would allow caching here.
	image = SkMakeImageFromRasterBitmap(skiaBitmap, kNever_SkCopyPixelsMode);
	}
	return image;
	}

	} // namespace android